Wrench.



No. 846,220. PATENTED MAR. 5, 1907.

'v B. N. LEHMAN, P. COOK 6v J. ROBERTSON.

WRENCH. APPLIUATIoN FILED MAB. 22, 190s.

Q l o w UNITED STATES yPATENT OFFICE.

BENJAMIN N. LEBMAN, FRANK OOOR, AND JAMES ROBERTSON, or EUREKA, UTAi-i.

WRENCH.

Specification of Letters Patent.

catenteol Maren 5, 1907.

Application filed March 22, 1906. Serial No. 307,392.

To cir/ZZ zul/1,0711, t may concern.'

Be it known that we, BENJAMIN N. LEH- MAN, FRANK COOK, and JAMES ROBERTSON, citizens of the United States, and residents of Eureka, county of Juab, State of Utah, have invented a new and useful Wrench, of which the following is a specification.

Our invention consists of a wrench having means for primarily and completely adjusting the position of the jaws of the `device on a nut or other object to be engaged, as will be hereinafter set forth, and other novel features, Vas will be hereinafter described and claimed.

Figures 1 and 2 represent elevations of opposite sides of a wrench embodying our invention. Fig. 3 represents alongitudinal section of a portion on line ab Fig. l. Fig. 4 represents a transverse section on line y y, Fig. 1. Fig. 5 represents a partial side elevation and partial longitudinal section of a modification.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates the outer or fixed jaw of a wrench, B the shank which carries the same, and C the handle of the device, which handle is hollow or recessed and telescopically receives portion of said shank.`

D designates the movable jaw, which freely encircles said shank and has a portion adapted to be'engaged by the Screw E,

which latter is swiveled on the boss F of the handle and provided with a thumb-piece G, said screw having also a bearing stem or stud H, which is mounted on the shoulder J to receive portion of the strain on said screw when the wrench is in use, it being noticed that the boss F and shoulder J ofthe head C are on the handle C.

On the side ofthe shank B is the ratchet K, which is adapted to be engaged by the dog L, which primarily occupies a recess M in the side of the head G', said dog being connected with the stem N, which passes through a transversely-extending recess F in the offset Q of said head and has connected with its outer end the spring-pressed button R, which, as apparent, occupies a position on the side of said offset opposite to said dog, so that when the handle is grasped the thumb may be conveniently applied to said button, the latter being also adjacent to the thumbpiece G, which is also conveniently accessible when the handle is grasped.

When the wrench is to be used, the button R is pushed in, the shank B then being released of the dog L, and the jaw A may be moved to or from the jaw D to a required extent for primary adjustment, when the button is let go and the proper tooth of the ratchet is again engaged by the dog, thus controlling the shank, and consequently the jaw A. The jaws are then fitted on a nut or other object, when the thumb-piece G is rotated, whereby the jaw D is moved into full adjustment on and close contact with said object, thus firmly grasping the latter, when the wrench may be operated without liability to slip from its position. When the worlr is accomplished, the piece G is rotated in reverse direction, whereby the jaw D recedes from the object suflicient to conveniently release the jaws from the same, when the wrench may be removed. It will be seen that the head C firmly supports the dog L` while engaged with the ratchet K, and the Offset Q of said head receives the stem N of said dog andl contains the spring l which bears against a shoulder in the recess F and the button R and forms a guide for the latter, as will be most apparent in Fig. 4.

In Fig. 5 we show the movable jaw D as pivotally mounted on the frame which carries the same, thus readily adapting the wrench for pipe or other purposes. The screw E, which passes through the nut D of the jaw D, as plainly shown in Fig. l, has on the end within the chamber D2 of the connecting-piece D3 of said jaw and nut the head or shoulder E', whose diameter'is Slightly larger than that of said screw, whereby complete disengagement of said screw from said jaw may be prevented. The boss F is made removable from the head C, so that the screw and its thumb-piece may be located and displaced when the latter is required, said boss being secured to the head in any suitable manner, in the present case by screw shown in dotted lines, Fig. l. The button R may be disconnected from the stem N, when the dog L and the spring N may be removed and afterward conveniently reapplied and retained in position. The side of the shank is provided with a measuring-scale (see Fig. l) for nice adjustment of the jaws D and A relatively to each other. It is evident that the IOO IOS

membersA, B", D, E, F, and O, as well=as the members R L N as above stated, are disconnectible from each other, a feature` oimportance should there be breakage of or injury to either member, so as to replace the member or members and permit of the ready assembly of the members in again making up the implement. The back of the connecting piece Ds of the jawD and nut D has a passage D4 therein, whereby access is had to the chamber D2 to provide for the application of the 4head or shoulderv E" tothe adjacent end of the screw E and removal of the same therefrom when so required.

Having thus described our invention, what we claim as new, and desire to secure by Iletters- Patent, is'- 1. In a wrench, an outer jaw, a movable jaw, a handle, ashank on said jaw, the same beine telescopically received in said handle and aving serrations in its side, a head onsaid handle, the same having a recess therein, an ofl'set on said head, the same having a re-` cess at an angle to that'of said head, a dog disposed in the recess of' said head, and adapted to engage either of said recesses, a stem extending angularly from said dog and occupying the recessof said "offset, a buttonconnected with said stein and a spring ypressing outwardly against said button and occupying the recess of said oi'lset.

2. .In awren'ch, ahandle, a'movable aw, an outer jaw, its shank telescopically received in said handle, a head on said handle having an offset, a dogl disposed in a recess in said head and having an angularly-disposed stem passed transversely through said offset, and a spring-pressed button movable in said ollset and detachably connected with said. stem, and the dog being removably held thereby inA the handle.

3.. In a wrench, a handle, a movable jaw, an outer aw, its shank telescopically received in said handle, a head on said handle having an ol'l'set, a dog disposed in a recess in said head and having an angularly-disposed stem passed transversely through said ol'liset, and a spring-pressed button movable in said offsetand 'beinggdetachably connected with said stem, and the dog removably held thereby in the handle, and engaging the side. of the shank opposite that upon which the button is disposed.

4. In a wrench, a handle, an outer aw, its shank telescopically received in the handle, a

head and an offset onthe handle; a movable jaw loosely movable on said shank and chambered, and a screw engaged'with'the movable jaw in said chamber and wit-h means on the handle, with the end of the screw engaging a shoulder on the head of the handle.

5. In a wrench, a handle, an outer jaw, its shank telescopically received in the handle, a head and an offset on the handle, a movable jaw loosely movable on said shank and chambered a screw engaged with the movable jaw in said chamber and with means on the handle, with the end of the screw engaging a shoulder on the head of the handle, and a bossy on the handle on which said screw is swiveled.

6. In a wrench, a handle,` an outer aw, its shank telescopically received in the handle, a: head andan oflset on thel handle, amovable j aw loosely movable on said shankand chambered, a screw engaged with the movable jaw in said chamber and with means on ythe handle, with the end of the screw engaging ay shoulder on the head of the handle, and a bosson the handle on which said screw is swiveled, said boss being detachably secured to the'han-v dle and its oilset.l

7. In a wrench, a handle, an outer jaw, its shank telescopically received in the handle, a head and an-oi'lset on the handle, a movablejaw loosely movable on said shank and cham-A bered, ascrew engaged with the movable jawy in said chamber and with means von the handle, with the end of the screw engaging a shoulder on the head ol thebandle, a boss-on the handle on which said screw is swiveled, said boss being detachably secured to the handle and its offset, and a thumb-piece on said screw between said shoulder and boss.-

8).l In .a wrench, a jaw, a shank on which the same is freely mounted, a nut, a'l ieee'. connecting said jaw and nut, the same aving achamber therein, a screw held `against longitudinal movement and fitted in said nut and adapted to enter said chamber, andv a head on said screw within said chamber ot greater diameter than therbore of said nut,y a wall of said piece having apassage therein 'in communication with said chamber, said screw being independent of said shanki BENJAMIN N. LEHMAN. FRANK COOK. JAMES ROBERTSON.

Witnesses:

A. J. MCPHEE, H. A. IRVINE.

TOO 

